Loom shuttle



' Nov.,29, 1927.

H. A. DAVIS 'LOOM HUTTLE Filed April 19) 192'? Patented Nov. Z, 1927.

UNITED I STATES "PATENT OFFICE.

HARRY A. DAVIS, 01 HOPEDALE, MASSAIJH'USETTS, ASSIGNOB TO DRAPEB CORPORA- TION, OF HOPEDALE, MASSACHUSETTS, A CORIOBATION OF MAINE.

Loom snur'irm. I

Application filed April 19,1927. Serial No. 185,000.

This invention relates toloom shuttles and more particularly to means for control ling the delivery of thread from the shuttle during weaving.

5 It is now the ordinary practice to wind filling carriers for use in loom shuttles with several. factors, as, for instance, when the.

filling is withdrawn from the filling carrier at the small part of the sconical wind such swirling action will be less than it is when drawn from the larger portion of the cone. In either event, the filling is liable to overthrow as the shuttle comes to rest in the shuttle box, and such overthrow may take place at the top of the shuttle or' it may at e times be at the bottom thereof. The result of this isthat when the overthrow is at the '.t0p of the shuttle the filling is liable to be broken, either by the threading block or by engagement. with the threads in the upper plane of the shed, and 'when at the bottom of the ,shuttle the overthrown filling is liable to be caught between the. shuttle and the race and be broken.

It has been heretofore proposed to, control the unwinding delivery of the thread from the filling, carrier by securing brushes or ing carrier. In such cases, however, thefilling, especially where it is of kinky character, is liable to enter between the bristles and become entangled to such an extent as to cause breakage. In some other cases it has been proposed to control the unwinding filling by-a strip of-canvas secured close to the walls of the. shuttle in the bobbin cham-- ber and depend upon the side throw of the swirling thread to engage the canvas 01' other fabric.

Theobject of the .pre'sent inventionis to provide a filling uncoiling control for the shuttle adjacent the tip or end portion of the bobbin or filling earrier such that the swirlingthread will be engaged by a shelf or flange extending transversely of the bobbin chamber, and one of which flanges s located above and the other below the longibristles in the bobbin chamber, which may bear either upon the filling or upon the filltudinal axis of the shuttle or filling carrier therein. f The effect is that the swirlin thread will contact with the plain surface flange of the controllin device, either on its upward or downward swing, and thus diminish if not completely prevent looping of the thread either above or below the shuttle as it comes to rest in the shuttle box. The invention and novel features thereof will best be made clear from the following description and the accompanying drawings showing one good practical form thereof.

In the drawings:

Fig. 1 is a perspective view -ofa shuttle containing the present invention and looking from above and to. theright;

Fig. 2 is a cross-section on the line 22 .of Fig. 1; and

Fig. 3 1s a perspective under view looking upwardly through the-bottom of the shuttle and showing more particularly the relation of the unwinding control device.

In the present instance of the invention the shuttle is shown as of the filling replenishing type and the advantages of the'prescut invention are more observable in such character of shuttle wherein the filling carrier or bobbin is changedfroi'n time to time during the loom operation.

The shuttle 1 may be of usual character having the bobbin chamber 2 and provided with means such as the jaws 3 for holding a filling carrier or bobbin .in the bobbinchamber.

The front or eye end of the shuttle is (provided with a longitudinally exten ing thread passage 4 which is. provided in the present instance by a threading block 5 having a scroll or thread casting device mounted in the thread passage. At the front end 95 portion of the .thread passagethe filling (I. leads over a bridge 7 towards the side delivery eye 8..

its'downward swinging or swirling action rial of sufficient flexibility.

will be controlled by the lower flexible flange. The flexibility of the two flanges is desirable because in a filling replenishing shuttle the incoming filling carrier may engage the upper flexible flange, while the outgoing filling carrier may engage the lower flexible flange, which, by reason of their flexibility, oli'er no obstruction to replenishing of filling. v

Mounted in the bobbin chamber Is the upper unwinding control member 9 which may be formed of rubber, felt, or other mate- As indicated in Figs. 2 and 3, the side wall of the bobbin chamber is recessed, as at 10, and the vertical wall portion 11 of the upper control member is seated therein and preferably secured in place by an adhesive, supplemented.

it may be by securing pins 12. Lxtending laterally of the bobbin chamber from the upper part of the wall 11 of the upper control member is the flange 15 winch, as indicated in Fig. 1, extends from a point 14 near the entrance to the thread passage, then backwardly to a point 15 beyond the end of the filling carrier. The part of the flexlble flange 13 between the points 14 and 15 1s preferably formed as a shelf-like pro ection which extends in a lateral direction transversely of the bobbin chamber and preferably part way there-across. As mdlcated 1n Fig. 1, the edge portion of the flange may be curved, as at 16, and gradually merge outwardly to the point 15.

The lower control member 17 is formed similarly to the upper control member except that the lower control member has the upwardly extending wall 18 whlch may be seated in the recess 19 in the wall of the bobbin chamber and provided at the lower end portion thereof with an inwardly extending flexible flange 20. The lower control member may be secured in position in a manner similar to that described for the upper control member.

The two flexible or yielding flanges l3 and 20 which extend laterally of the bobbin chamber, one above and the other below the longitudinal axis of the shuttle, may be variously contrived-and secured in place, but the above described construction provides a good practical form of the invention. In any event, the yielding flanges 13 and 20 are continuous and form uninterrupted surfaces for the engagement of the swirling thread, either as it rises in its swirling movement or falls, thus obviating the dangerous condition of overthrow, either above or below the shuttle.

The unwinding control members are herein shown as preferably formed of rubber and may be cast or cut from the rubber in a single piece, but it is to be understood that they may be formed of other flexible material or differently contrived, the essential being that they shall present at the forward end of the bobbin chamber inwardly projecting and chamber and having a shelf-like flange of yielding web material extending laterally below the longitudinal axis of the shuttle.

2. A filling replenishing shuttle for looms having a bobbin chamber, and two filling unwinding control members secured at oppo- .s1te sides of the bobbin chamber and each having an inwardly projecting flexible flange, one of which-is above and the other below the delivery end of a filling carrier in the shuttle and each of'said flanges ofweb material extending from points adjacent the tip end of the filling carrier to points adj acent the front end of the bobbin chamber to control the swirling filling as it is unwound from the filling carrier.

3. A filling replenishing shuttle for looms having a bobbin chamber and an'automatic threading device, and two filling unwinding control members secured to opposite sides of the bobbin chamber and each provided with a flexible flange projecting part way across the bobbin chamber and of increasing width towardsthe forward end thereof to engage the swirling filling as it is withdrawn from 'the shuttle.

posed above and the other below the delivery end of the filling carrier in the shuttle.

5. A filling replenishing shuttle for looms having a bobbin chamber and an automatic threading device, and two filling unwinding control members secured to opposite sides of the bobbin chamber and each provided with a flexible flange-of varying width extending longitudinally of the bobbin chamber HARRY A. DAVIS. 

